Rubber Flat Washer Gaskets M3–M9 NBR VMQ FKM EPDM Seals

Rubber Flat Washer Gaskets — NBR, VMQ, FKM & EPDM Materials

Keep your connections leak-free and secure with these precision-made rubber flat washer gaskets. Available in a wide selection of materials — Nitrile (NBR), Silicone (VMQ), Fluorocarbon (FKM/Fluorine), and EPDM — these ring gaskets are engineered to deliver a reliable, long-lasting seal across a broad range of applications. With an H2.5mm thickness and sizing from M3 to M9, they fit a huge variety of standard fastener configurations.

Key Features

• Multiple Material Options: Choose from NBR (Nitrile), VMQ (Silicone), FKM (Fluorocarbon/Fluorine), or EPDM — each offering distinct resistance properties for your specific application.
• Wide Size Range: M3 to M9 thread sizes with H2.5mm thickness; suitable for standard and general-purpose fastening.
• Color Variety: Available in Black, Red, and White for easy material identification and sorting.
• Ring Gasket Shape: Flat, ring-style profile provides excellent surface contact for dependable sealing performance.
• Standard Dimensions: Manufactured to standard specifications for consistent, predictable fit and function.
• Versatile Applications: Ideal for plumbing, automotive, industrial machinery, hydraulic systems, and general hardware use.
• Chemical & Temperature Resistance: Depending on the material selected, these washers offer strong resistance to oils, fuels, solvents, ozone, and weathering.

Material Guide

Specifications

• Brand: Ouling
• Thickness: H2.5mm
• Thread Size: M3 – M9
• Shape: Ring Gasket (Flat Washer)
• Standard: Standard
• Colors Available: Black, Red, White
• Country of Origin: Made in Mainland China

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Frequently Asked Questions

Q: What is the difference between NBR, VMQ, FKM, and EPDM rubber washer gaskets?

A: Each material offers different performance properties. NBR (Nitrile) rubber flat washers are best for oil and fuel resistance, making them popular in automotive and hydraulic applications. VMQ (Silicone) washers perform well across a wide temperature range and are used in food-grade and electrical environments. FKM (Fluorocarbon) gaskets excel in high-temperature and chemically aggressive settings. EPDM washers are ideal for outdoor exposure, water, steam, and ozone resistance. Choose based on the fluid, chemical, and temperature conditions in your application.

Q: What sizes are these rubber flat washer gaskets available in?

A: These rubber sealing washers come in M3 through M9 thread sizes with an H2.5mm thickness, covering a broad range of standard fastener applications in plumbing, industrial, and hardware settings.

Q: Can these flat washer gaskets be used for plumbing and water applications?

A: Yes. EPDM and VMQ (Silicone) variants are well-suited for water and plumbing applications due to their strong water and moisture resistance. For high-pressure or chemical fluid systems, FKM or NBR materials are recommended. Always confirm the gasket material is compatible with the specific fluid and temperature in your system.

Q: How do I identify which color corresponds to which material?

A: Color availability (Black, Red, White) varies by material type and is primarily used for visual identification and easy sorting when managing multiple gasket types on a worksite or in inventory.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.